Sierra-at-Tahoe — Snow Preservation
Matched OpenSkiMap ski area: Sierra-at-Tahoe Ski Resort (41 mapped runs, 5175 m of vertical drop analyzed).
Score version: ASPECT_V3_FIXED_COORDS · calculated Sep 27, 2026 · source: OpenSkiMap/OpenStreetMap
| Sierra-at-Tahoe | |
|---|---|
| Snow Preservation Score (0=poor, 100=excellent) |
56 |
| Solar Exposure Score | 44 |
| Overall Confidence | GOOD |
| Aspect advantage ratio (actual ÷ neutral-baseline irradiance) |
0.804 |
| Mean fall-line bearing | 317.5° |
| Orientation alignment (0=scattered, 1=fully consistent) |
0.65 |
| Mean slope (mapped, weighted) | 14.6° |
| Ski-season irradiance actual vs. neutral baseline (kWh/m²/day) |
3.58 vs. 4.46 |
Terrain orientation (vertical-drop-weighted)
Each spoke is a compass direction; length is the share of mapped, snow-holding terrain facing that way. A tall, narrow rose means the mountain consistently faces one direction; a round, even rose means it's scattered across every aspect.